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Pruning method for controlling Dimocarpus longan crown and balancing yield and tree vigor

A longan tree, balanced technology, applied in gardening methods, botanical equipment and methods, horticulture, etc., can solve problems that do not involve longan, etc., and achieve the effect of improving efficiency, reducing costs, and reducing tree crowns

Active Publication Date: 2018-01-19
POMOLOGY RES INST GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Lin Zhiming's article "Retraction Pruning and Management Techniques of Aged Longan Trees" (Lin Zhiming. Retraction Pruning and Management Techniques of Aged Longan Trees [J]. Fujian Hot Crops Science and Technology, 2006,31(3):26-27.) , mentioning spring retraction pruning for trees with no or few fruits after flowering, which is not combined with longan flower thinning and fruit thinning. In addition, it is aimed at crown management of old longan trees, and does not involve young and middle-aged longan trees

Method used

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  • Pruning method for controlling Dimocarpus longan crown and balancing yield and tree vigor
  • Pruning method for controlling Dimocarpus longan crown and balancing yield and tree vigor
  • Pruning method for controlling Dimocarpus longan crown and balancing yield and tree vigor

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Experimental program
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Effect test

Embodiment 1

[0055] It was carried out in the Shixia longan orchard of Wuchuan Forest Farm, with an area of ​​30 mu. From 2010 to 2012, the balanced pruning of Shixia longan tree crown was carried out while thinning flowers or fruits for three consecutive years.

[0056] In 2010, in the middle and late March, when the flower spikes were finalized and before they bloomed, the crown balance pruning was carried out. The branches without flowers are retracted, and the retracted length is 0.8-1.2m. The thickness of retracted branches is controlled below 3cm in diameter ( figure 1 The flowering period retraction position in the middle), the number of retracted branches is controlled at 30-45%, and the pruning effect diagram is shown in figure 1 . After pruning, new shoots ( figure 2 ), keep 2-3 shoots on each big branch ( image 3 ). The remaining fruiting branches are subjected to conventional fruit thinning treatment. In the first ten days of July, after the fruit of the longan tree is ...

Embodiment 2

[0064] On May 9, 2012, a balanced pruning experiment was carried out at the Institute of Fruit Trees of the Guangdong Academy of Agricultural Sciences in Shixia longan. Six Shixia plants with similar crown size and moderate fruit bearing capacity were selected and divided into three treatments. Each treatment group included 2 trees. Group 1: Balanced pruning (May 9th), the young fruit stage (fruit thinning stage) retracts about 30%-50%, the diameter of the branches for retraction pruning is less than 3cm, and the total length of retraction pruning is 0.8-1.0m ;Slightly retract the remaining branches after picking the fruit, control the diameter of the pruned branches to be below 1.5cm, and the length of the retracted pruning is 0.3-0.8m; Treatment group 2: No retraction during the flowering and fruiting period, pruning according to conventional management methods after fruit picking (Refer to Li Jianguang: 200 Questions on Longan High-benefit Cultivation Techniques, Second Edit...

Embodiment 3

[0072] From March to April 2014, balanced pruning experiments were carried out in Guangzhou, Zhongshan, Enping, and Raoping experimental bases, and large branches were retracted during the flowering period to achieve the purpose of flower thinning at the same time. Mainly for branches in the middle and upper part of the canopy with a diameter of less than 3cm, the length of retraction pruning is 0.8-1.2m, and the amount of retraction pruning is controlled at 30%-40%. Mainly for large plants in large orchards, select 10 trees for each orchard, 5 large branch thinning flowers according to the balanced pruning method of the present invention, and 5 traditional flower thinning, record the time used for each flower thinning, and measure the crown size before and after pruning , The plant yield was counted when the fruit was picked, and the results are shown in Table 4.

[0073] Table 4 Comparison of balanced pruning and traditional flower thinning effect

[0074]

[0075] It ca...

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Abstract

The invention discloses a pruning method for controlling Dimocarpus longan crowns and balancing the yield and the tree vigor. The balancing pruning method includes: performing retraction pruning on crowns while thinning flowers and / or fruits of Dimocarpus longan trees; controlling the diameter of pruned branches to be less than 3.5 cm, the total length of the pruned branches to be in 0.6-1.5 m, and the total number of the pruned branches to be in 25%-50%; performing fruit thinning on the rest fruiting branches; performing retraction pruning on the fruiting branches after the fruits of Dimocarpus longan trees are picked, controlling the diameter of the pruned branches to be less than 1.8 cm, the length of the pruned branches to be in 0.3-1.2 m so as to control the crowns and balance the yield and the tree vigor. The balancing pruning method integrates flower and fruit thinning and crown control, can balance growth and fruiting of the plants, can balance the yield and the quality, can control the size of the crowns, can cultivate strong and healthy summer tips, and can acquire high quality autumn tips and fruiting mother branches.

Description

technical field [0001] The invention belongs to the technical field of fruit tree cultivation, and in particular relates to a pruning method for controlling the crown of a longan tree and balancing yield and tree vigor. Background technique [0002] Longan (Dimocarpus longan Lour.) is a famous subtropical fruit in my country, and its area and output both rank first in the world. In the high-quality and high-yield cultivation technology of longan, flower thinning and fruit thinning and crown management have become routine measures. [0003] Flower thinning and fruit thinning is to artificially remove some excessive flowers and young fruits to obtain high-quality fruits and continuous high yield. Most fruit trees produce far more flowers than produce fruit. For example, in a year with many blooms, if an adult apple tree has 5% flowers, and a peach tree has 15-20% flowers and fruits to reach maturity, a bumper harvest can be obtained. Excessive flowering and fruiting, nutrie...

Claims

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Application Information

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IPC IPC(8): A01G7/06A01G17/00
Inventor 李建光潘学文郭栋梁韩冬梅李荣
Owner POMOLOGY RES INST GUANGDONG ACADEMY OF AGRI SCI
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